A Practical Guide to GLP-1 Weight Loss Injections
GLP-1 medications like Ozempic, Wegovy, and Mounjaro have changed what is realistically possible for Canadians trying to lose weight through medication. Most people who start treatment with a licensed clinician see steady, sustained loss that older appetite suppressants rarely delivered. The harder part is usually sorting through pricing, provincial coverage, and which provider to trust, not finding a medication that works.
How GLP-1 Injections Work
GLP-1 receptor agonists mimic a hormone your gut releases after eating. They suppress appetite, slow gastric emptying so meals feel more filling, and improve insulin response. The combined effect is a significant, sustained reduction in how much you want to eat - without the constant hunger that makes most diets fail.
A few of the medications available in Canada:
- Semaglutide (Ozempic, Wegovy) - weekly injection, the most widely prescribed GLP-1 in Canada
- Tirzepatide (Mounjaro) - dual GLP-1/GIP action, the strongest average weight loss in trials
- Liraglutide (Saxenda) - daily injection, a longer-established alternative
- Generic semaglutide - Health Canada-approved in 2025, the same active ingredient at a fraction of the price
Is Treatment Right for You?
GLP-1 therapy is generally considered for adults who:
- Have a BMI of 30 or higher, or 27+ with a weight-related condition
- Have tried diet and exercise changes without lasting results
- Do not have a personal or family history of medullary thyroid carcinoma or MEN2
A licensed clinician reviews your health history, current medications, and treatment goals online before anything is prescribed - the same standard of care as an in-person visit.
Using GLP-1 Medications Safely
Mild side effects, nausea, constipation, and fatigue, are common during the first few weeks of dose titration and usually ease afterward. Only get your prescription through a licensed provider or pharmacy, disclose every medication you take, and follow the titration schedule your clinician sets rather than adjusting doses on your own.
Where to Start
If you are considering treatment, the useful next step is straightforward: complete an online assessment with one of the licensed Canadian providers reviewed above, discuss your health history and goals with the assigned clinician, and confirm which medication and dose fits your situation before your first prescription ships.